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What is Permitted Development ? 

 Permitted Development plans by Easyplan

Permitted Development - the planning permission your property has already been granted.

You can make certain types of alterations and/or extensions to your property without having to apply for planning permission. These are called "permitted development rights" .

Before October 2008 allowances were based on volume which meant that in many cases if you extended your kitchen you couldn’t extend to the side or have a loft conversion. This has now changed and  is calculated on dimensions, which means you can now extend backwards, sideways and have that loft extension !

Many people are surprised  to find out just how much they can achieve under Permitted Development.


As of 30th May 2013 -  Larger extensions are now allowed under Permitted Development - to find out about the new Permitted Development rules please go to our page outlining these changes -  Permitted Development Rules 2013 .

What are the advantage of Permitted Development to Planning Permission  ?

Permitted Development is purely judged on the facts

  • Size
  • Height
  • Materials
  • If it fits the criteria it's allowed


Permitted Development is not based on the opinion of planning officers or neighbours but is purely judged on the facts .


Permitted Development  - What are the Restrictions ?

Flats and maisonettes do not have any permitted development rights

In certain parts of Birmingham, generally known as 'designated areas', permitted development rights are more restricted. If you live in a Conservation Area, a National Park, an Area of Outstanding Natural Beauty, you will need to apply for planning permission for certain types of work which do not need an application in other areas. There are also different requirements if the property is a listed building, or has an Article 4 direction, for more information take a look at our Planning Permission page .We have extensive knowledge of the Birmingham area and can advise you on this matter. 


Am I allowed to extend my home without Planning Pemission ? 

There are many things you are allowed to do without planning permission but you do need to know all the criteria and how to apply it. Permitted Development is open to interpretation ( as can be seen from the many appeals going through planning at the moment !)  Easyplan Birmingham South  are experts in Permitted Development and can advise you on all aspects of this.  Here are just a few of the most popular projects allowed under Permitted Development ( various criteria applies ). Always obtain a Certificate of Lawfulness for any building work carried out under Permitted Development.

   Extensions -

  •  Rear extensions - Can be up to  4m in depth for a  detached house, and the full width of the property

                                                  3m in depth -for a  terraced and semi detached house

  • Side extensions  -  can be up to half the width of the existing property and the full depth of the property
  • The eaves height on single storey extensions should not exceed 3m and the ridge height 4m
  • The extension should not sit forward of the principal elevation
  • Double storey extensions must be at the rear, 2m from a side boundary and 7m from the rear boundary




   Loft Conversions

  • Loft extensions without enlargement of the roof are permtted development
  • Roof windows projecting less than 10mm do not count as enlargement of the roof
  • Dormer windows can be aded to the rear and side elevations. (Glazing and height restrictions apply)
  • Hipped roofs can be altered to gable roofs
  • Overall increase in volume can be up to 50 cubic metres (40 cub m on terraced houses)



  •  The building is not attached to existing propery
  •  The outbuilding can cover up to 50% of the original garden
  • The outbuilding can be 3m high with a flat roof or 4m with a pitched roof ( 2.5m if within 2m of the boundary)

If you are thinking of building under Permitted Development we would always recommend you submit a Lawful Development Certificate .

What is a Lawful Development Certificate ?


A Lawful Development Certificate confirms that the building work is allowed under Permitted Development and is, therefore, immune from an enforcement action.It enables you to prove to neighbours the building work is allowed and it will also provide a future purchaser's solicitor with proof that the extension or loft conversion is legal, which can help avoid delays in the conveyancing.

As with a planning application you will need scaled drawings of the existing building and the proposed work but the fee payable to the council is half that of a planning application.

Easyplan can handle all aspects of obtaining a Lawful Development Certificate . Council's are often presented with poor quality drawings and insufficient information and that won't get you a helpful and constructive response. On the other hand, clear, quality accurate drawings presented with a clear, full checklist showing exactly how and why your proposal is considered to be Permitted Development will be much better received by a council officer and less likely to suffer delays in being processed.


Free Initial consultation  - free advice on Planning Permission or  Permitted Development  

     Call -    0121 314 5333